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Wellington Water Supply Resilience Study

We determined a skeleton network with water supply distribution points that could provide a basic level of supply during an earthquake

  • Wellington, New Zealand

    Wellington, New Zealand

Working with Wellington Water to prepare for the worst

The Wellington region sits on the interface of the Australian and Pacific tectonic plates and is always threatened by the possibility of a large earthquake: the Wellington fault has a one in ten chance of moving in the next 100 years, which would cause a magnitude 7.5 or greater earthquake.

Wellington Water engaged us to complete a resilience study. They wanted to identify critical areas within the network and determine a skeleton network with water supply distribution points that could provide a basic level of supply during an emergency event. 

We developed innovative sets of algorithms which analyzed the road or walkway network and found the shortest steepness-adjusted route between each property and all distribution points. Another algorithm was then created to determine the best route to connect reservoirs with critical users and distribution points. We identified approximately 400 kilometres of critical networks, with approximately 240 kilometres requiring seismic resilience upgrades.

Our study successfully addressed community outcomes of how and where to provide emergency access to a water supply within a reasonable timeframe after a major earthquake.

At a Glance

IPWEA NZ Excellence Awards 2018, Excellence in Maximising Asset Performance - WINNER
IPWEA Australasia Excellence Awards 2019, Excellence in Asset Management - WINNER
Meet Our Team

Cedric Papion, Senior Water Network Engineer

We help councils plan their water networks in the long term. We are innovative, pragmatic, and fun.
Cedric Papion Senior Water Network Engineer Read More

David Hogg, Regional Director, Water NZ

I most like the feeling I get when I see our folks are engaged, busy, and delivering great outcomes for their communities.

Anna Bridgman, New Zealand Operations Leader—Water

How do I deliver the best work for our clients? By making sure my teams are happy, motivated, challenged and resourced.
Anna Bridgman New Zealand Operations Leader—Water Read More

Cedric Papion

Senior Water Network Engineer

David Hogg

Regional Director, Water NZ

Anna Bridgman

New Zealand Operations Leader—Water

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